That is the command for turning off vsync. If you leave vsync enabled, you will get severe mouse lag. In order to remove mouse acceleration completely from the game, you have to enter in the commands above and disable vsync.

why do they even let you un tick the vsync box when it does not actually disable vsync? I believe it was the same way on Fallout 3 too. are the developers so clueless that they can not even tell it does not work?

umm and why change that ini file why not change the real one thats in your documents directory. if you change the one in the steam directory every time you patch or run the file checker you will have to change it back.

umm and why change that ini file why not change the real one thats in your documents directory. if you change the one in the steam directory every time you patch or run the file checker you will have to change it back.

With one of the past updates (don't remember which one), manually changing the Fallout.ini in your documents folder no longer works as it will get overridden or reset by the Fallout launcher. That is why you have to alter your values using the Fallout_default.ini file located in the Steam folder.

Quote:

Fallout: New Vegas Update: Most tweaks which would normally go in the Fallout.ini file in Fallout 3 actually need to be made in the Fallout_default.ini file found under the \Program Files (x86)\Steam\steamapps\common\fallout new vegas directory in Fallout: New Vegas. This is because when the game is launched via Steam, it opens the launcher first, which overwrites your Fallout.ini file with the contents of the Fallout_default.ini file, along with your launcher settings. Make a backup of Fallout_default.ini, then edit it with a text editor.